Joliet, IL Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Joliet, IL in one place.
Sunny, with a high near 93. Heat index values as high as 99. West southwest wind around 5 mph.
Local Weather Overview
This forecast page for Joliet, IL is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Jul 14, 2026 5:50 PM CDT.
The active forecast window currently covers Jul 14 to Jul 20, 2026 for Joliet, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 14 to Jul 20, 2026
- Latest sync
- Jul 14, 2026 5:50 PM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Joliet
Wednesday looks like the warmest upcoming period in Joliet at 94 degrees F.
Sunday Night is the coolest period ahead with temperatures near 69 degrees F.
The strongest winds are forecast for Saturday at about 5 to 10 mph WSW.
Precipitation is mentioned in 9 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 14, 2026 5:50 PM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- LOT
- Radar station
- KLOT
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly clear, with a low around 72. Heat index values as high as 99. West southwest wind around 5 mph.
Sunny, with a high near 94. Heat index values as high as 101. West wind around 5 mph.
Partly cloudy, with a low around 74. Heat index values as high as 100. Southwest wind around 5 mph.
A slight chance of rain showers between 1pm and 4pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 92. Southwest wind around 5 mph. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 72. Chance of precipitation is 20%.
A chance of showers and thunderstorms between 7am and 10am, then showers and thunderstorms likely. Mostly sunny, with a high near 89.
Showers and thunderstorms likely before 1am. Partly cloudy, with a low around 72.
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 91.
A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 70.
Mostly sunny, with a high near 89.
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 69.
A slight chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 89.
A chance of showers and thunderstorms before 7pm, then a slight chance of showers and thunderstorms. Partly cloudy, with a low around 69.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
This Afternoon
Jul 14
|
Sunny
|
93°F |
5 mph
WSW
|
|
Tonight
Jul 14
|
Mostly Clear
|
72°F |
5 mph
WSW
|
|
Wednesday
Jul 15
|
Sunny
|
94°F |
5 mph
W
|
|
Wednesday Night
Jul 15
|
Partly Cloudy
|
74°F |
5 mph
SW
|
|
Thursday
Jul 16
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
92°F |
5 mph
SW
|
|
Thursday Night
Jul 16
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
72°F |
0 to 5 mph
E
|
|
Friday
Jul 17
|
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
89°F |
0 to 5 mph
S
|
|
Friday Night
Jul 17
|
Showers And Thunderstorms Likely
|
72°F |
5 mph
SW
|
|
Saturday
Jul 18
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
91°F |
5 to 10 mph
WSW
|
|
Saturday Night
Jul 18
|
Chance Showers And Thunderstorms
|
70°F |
5 to 10 mph
NW
|
|
Sunday
Jul 19
|
Mostly Sunny
|
89°F |
5 mph
NNW
|
|
Sunday Night
Jul 19
|
Partly Cloudy then Slight Chance Showers And Thunderstorms
|
69°F |
5 mph
S
|
|
Monday
Jul 20
|
Slight Chance Showers And Thunderstorms
|
89°F |
5 to 10 mph
SW
|
|
Monday Night
Jul 20
|
Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms
|
69°F |
5 to 10 mph
W
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Joliet.
